FN Archimer Export Format
PT J
TI Metal stable isotopes in transplanted oysters as a new tool for monitoring anthropogenic metal bioaccumulation in marine environments: The case for copper
BT 
AF FERREIRA ARAUJO, Daniel
   Knoery, Joel
   Briant, Nicolas
   Ponzevera, Emmanuel
   Chouvelon, Tiphaine
   Auby, Isabelle
   Yepez, Santiago
   Bruzac, Sandrine
   Sireau, Teddy
   Pellouin-Grouhel, Anne
   Akcha, Farida
AS 1:1;2:1;3:1;4:2;5:1,3;6:4;7:5;8:1;9:1;10:6;11:7;
FF 1:PDG-RBE-BE-LBCM;2:PDG-RBE-BE-LBCM;3:PDG-RBE-BE-LBCM;4:PDG-RBE-BE;5:PDG-RBE-BE-LBCM;6:PDG-ODE-LITTORAL-LERAR;7:;8:PDG-RBE-BE-LBCM;9:PDG-RBE-BE-LBCM;10:PDG-RBE-BE;11:PDG-RBE-BE-LEX;
C1 Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L’Ile D’Yeu, BP 21105, 44311, Nantes Cedex 03, France
   Ifremer, Unité Biogéochimie et Écotoxicologie (BE), Rue de L’Ile D’Yeu, BP 21105, 44311, Nantes Cedex 03, France
   Observatoire Pelagis, UMS 3462 La Rochelle Université-CNRS, 5 Allée de L'Océan, 17000, La Rochelle, France
   Ifremer, Unité Littoral, Laboratoire Environnement Ressources D’Arcachon (Littoral/LERAR), Quai Du Commandant Silhouette, 33120, Arcachon, France
   Department of Forest Management and Environment, Faculty of Forestry, University of Concepcion, Calle Victoria, 500 Concepción, Bio-Bio, Chile
   Ifremer, Unité Biogéochimie et Écotoxicologie (BE), Réseau D'Observation de La Contamination Chimique Du Littoral Rue de L’Ile D’Yeu, BP 21105, 44311, Nantes Cedex 03, France
   Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire D’Écotoxicologie (BE/LEX), Rue de L’Ile D’Yeu, BP 21105, 44311, Nantes Cedex 03, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   UNIV LA ROCHELLE, FRANCE
   IFREMER, FRANCE
   UNIV CONCEPCION, CHILE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI NANTES
   ARCACHON
SE PDG-RBE-BE-LBCM
   PDG-RBE-BE
   PDG-ODE-LITTORAL-LERAR
   PDG-RBE-BE-LEX
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 9.988
TC 16
UR https://archimer.ifremer.fr/doc/00718/83006/87891.pdf
LA English
DT Article
DE ;Metal bioaccumulation;Non-traditional isotopes;Bivalve mollusk;Arcachon bay;MC-ICP-MS
AB Metal release into the environment from anthropogenic activities may endanger ecosystems and human health. However, identifying and quantifying anthropogenic metal bioaccumulation in organisms remain a challenging task. In this work, we assess Cu isotopes in Pacific oysters (C. gigas) as a new tool for monitoring anthropogenic Cu bioaccumulation into marine environments. Arcachon Bay was taken as a natural laboratory due to its increasing contamination by Cu, and its relevance as a prominent shellfish production area. Here, we transplanted 18-month old oysters reared in an oceanic neighbor area into two Arcachon Bay mariculture sites under different exposure levels to continental Cu inputs. At the end of their 12-month long transplantation period, the oysters’ Cu body burdens had increased, and was shifted toward more positive δ65Cu values. The gradient of Cu isotope compositions observed for oysters sampling stations was consistent with relative geographic distance and exposure intensities to unknown continental Cu sources. A binary isotope mixing model based on experimental data allowed to estimate the Cu continental fraction bioaccumulated in the transplanted oysters. The positive δ65Cu values and high bioaccumulated levels of Cu in transplanted oysters support that continental emissions are dominantly anthropogenic. However, identifying specific pollutant coastal source remained unelucidated mostly due to their broader and overlapping isotope signatures and potential post-depositional Cu isotope fractionation processes. Further investigations on isotope fractionation of Cu-based compounds in an aqueous medium may improve Cu source discrimination. Thus, using Cu as an example, this work combines for the first time a well-known caged bivalve approach with metal stable isotope techniques for monitoring and quantifying the bioaccumulation of anthropogenic metal into marine environments. Also, it states the main challenges to pinpoint specific coastal anthropogenic sources utilizing this approach and provides the perspectives for further studies to overcome them. 
PY 2021
PD DEC
SO Environmental Pollution
SN 0269-7491
PU Elsevier BV
VL 290
UT 000696812200001
DI 10.1016/j.envpol.2021.118012
ID 83006
ER

EF